Detached-Eddy Simulation of a Louver-Cooling Scheme for Turbine Blades
作者： C. X-Z. Zhang , S. I. Kim , I. Hassan
DOI: 10.2514/1.35230
关键词:
摘要: The performance of a louver-cooling scheme on flat plate was analyzed using detached-eddy-simulation turbulence model. It assumed that the tested in wind tunnel with mainstream flow velocity 20 m/s, equivalent to Reynolds number 16,200, based jet diameter. Turbulence closure achieved by realizable k-e-based Solutions two blowing ratios 0.5 and 1 were successfully obtained running parallel 16 nodes computer cluster. flowfields found be highly unsteady oscillatory nature, maximum fluctuation adiabatic effectiveness as high 15% time-averaged value. is shown fluctuations are mainly caused spanwise coolant vortical structures created interaction mainstream.
core.ac.uk
sci-hub.se 参考文章(24)
M. Shur, P.R. Spalart, M. Strelets, A. Travin, Detached-eddy simulation of an airfoil at high angle of attack Engineering Turbulence Modelling and Experiments 4#R##N#Proceedings of the 4th International Symposium on Engineering Turbulence Modelling and Measurements; Ajaccio, Corsica, France, 24–26 May, 1999. pp. 669- 678 ,(1999) , 10.1016/B978-008043328-8/50064-3
A. K. Sinha, D. G. Bogard, M. E. Crawford, Film-cooling effectiveness downstream of a single row of holes with variable density ratio Journal of Turbomachinery-transactions of The Asme. ,vol. 113, pp. 442- 449 ,(1991) , 10.1115/1.2927894
Sung In Kim, Ibrahim G. Hassan, Xuezhi Zhang, Unsteady Simulation of Film Cooling Flow From an Inclined Cylindrical Jet ASME/JSME 2007 Thermal Engineering Heat Transfer Summer Conference collocated with the ASME 2007 InterPACK Conference. pp. 581- 589 ,(2007) , 10.1115/HT2007-32401
Y. Yu, C.-H. Yen, T. I.-P. Shih, M. K. Chyu, S. Gogineni, Film Cooling Effectiveness and Heat Transfer Coefficient Distributions Around Diffusion Shaped Holes Journal of Heat Transfer-transactions of The Asme. ,vol. 124, pp. 820- 827 ,(2002) , 10.1115/1.1418367
Mayank Tyagi, Sumanta Acharya, Large Eddy Simulation of Film Cooling Flow From an Inclined Cylindrical Jet Journal of Turbomachinery-transactions of The Asme. ,vol. 125, pp. 734- 742 ,(2003) , 10.1115/1.1625397
T. F. Fric, A. Roshko, Vortical structure in the wake of a transverse jet Journal of Fluid Mechanics. ,vol. 279, pp. 1- 47 ,(1994) , 10.1017/S0022112094003800
Christian Saumweber, Achmed Schulz, Sigmar Wittig, Free-Stream Turbulence Effects on Film Cooling With Shaped Holes Journal of Turbomachinery-transactions of The Asme. ,vol. 125, pp. 65- 73 ,(2003) , 10.1115/1.1515336
B. Wegner, Y. Huai, A. Sadiki, Comparative study of turbulent mixing in jet in cross-flow configurations using LES International Journal of Heat and Fluid Flow. ,vol. 25, pp. 767- 775 ,(2004) , 10.1016/J.IJHEATFLUIDFLOW.2004.05.015
Tsan-Hsing Shih, William W. Liou, Aamir Shabbir, Zhigang Yang, Jiang Zhu, A new k-ϵ eddy viscosity model for high reynolds number turbulent flows Computers & Fluids. ,vol. 24, pp. 227- 238 ,(1995) , 10.1016/0045-7930(94)00032-T
X. Z. Zhang, I. Hassan, Film Cooling Effectiveness for an Advanced-Louver Cooling Scheme for Gas Turbines Journal of Thermophysics and Heat Transfer. ,vol. 20, pp. 754- 763 ,(2006) , 10.2514/1.18898